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[SCM] GNU Autoconf source repository branch, master, updated. v2.63-100-
From: |
Eric Blake |
Subject: |
[SCM] GNU Autoconf source repository branch, master, updated. v2.63-100-g2509abe |
Date: |
Fri, 24 Oct 2008 21:32:42 +0000 |
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http://git.sv.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=2509abe0dc371ffe74789dac9421d31019822133
The branch, master has been updated
via 2509abe0dc371ffe74789dac9421d31019822133 (commit)
from 6369d61222cbc8f1c930d4ed79cbdd2745178d55 (commit)
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- Log -----------------------------------------------------------------
commit 2509abe0dc371ffe74789dac9421d31019822133
Author: Paolo Bonzini <address@hidden>
Date: Mon Oct 20 15:35:17 2008 +0200
Use a shell function for AC_CHECK_FUNC.
* lib/autoconf/functions.m4 (_AC_CHECK_FUNC_BODY): New macro.
(AC_CHECK_FUNC): Use a shell function.
* lib/autoconf/c.m4 (AC_LANG_SOURCE(C)): Reduce number of forks.
Signed-off-by: Eric Blake <address@hidden>
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 8 ++++++++
lib/autoconf/c.m4 | 23 +++++++++++------------
lib/autoconf/functions.m4 | 30 +++++++++++++++++++++++-------
3 files changed, 42 insertions(+), 19 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index b26d7ca..61b5f33 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2008-10-24 Paolo Bonzini <address@hidden>
+ and Eric Blake <address@hidden>
+
+ Use a shell function for AC_CHECK_FUNC.
+ * lib/autoconf/functions.m4 (_AC_CHECK_FUNC_BODY): New macro.
+ (AC_CHECK_FUNC): Use a shell function.
+ * lib/autoconf/c.m4 (AC_LANG_SOURCE(C)): Reduce number of forks.
+
2008-10-24 Eric Blake <address@hidden>
Work around fact that gnulib-tool doesn't use m4_copy.
diff --git a/lib/autoconf/c.m4 b/lib/autoconf/c.m4
index f3b3e5f..90a091c 100644
--- a/lib/autoconf/c.m4
+++ b/lib/autoconf/c.m4
@@ -189,8 +189,7 @@ m4_define([_AC_LANG_PREFIX(Objective C)], [OBJC])
m4_define([AC_LANG_SOURCE(C)],
[/* confdefs.h. */
_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
+cat confdefs.h - <<_ACEOF >>conftest.$ac_ext
/* end confdefs.h. */
$1])
@@ -883,7 +882,7 @@ AC_DEFUN([AC_PROG_CXX_C_O],
[AC_REQUIRE([AC_PROG_CXX])dnl
AC_LANG_PUSH([C++])dnl
AC_CACHE_CHECK([whether $CXX understands -c and -o together],
- [ac_cv_prog_cxx_c_o],
+ [ac_cv_prog_cxx_c_o],
[AC_LANG_CONFTEST([AC_LANG_PROGRAM([])])
# We test twice because some compilers refuse to overwrite an existing
# `.o' file with `-o', although they will create one.
@@ -899,8 +898,8 @@ fi
rm -f conftest*])
if test $ac_cv_prog_cxx_c_o = no; then
AC_DEFINE(CXX_NO_MINUS_C_MINUS_O, 1,
- [Define to 1 if your C++ compiler doesn't accept
- -c and -o together.])
+ [Define to 1 if your C++ compiler doesn't accept
+ -c and -o together.])
fi
AC_LANG_POP([C++])dnl
])# AC_PROG_CXX_C_O
@@ -1343,7 +1342,7 @@ AC_DEFUN([AC_PROG_CC_STDC],
AS_CASE([$ac_cv_prog_cc_stdc],
[no], [AC_MSG_RESULT([unsupported])],
[''], [AC_MSG_RESULT([none needed])],
- [AC_MSG_RESULT([$ac_cv_prog_cc_stdc])])
+ [AC_MSG_RESULT([$ac_cv_prog_cc_stdc])])
])
@@ -1536,10 +1535,10 @@ dnl the user did not specify a config header but is
relying on the
dnl default behavior for universal builds.
m4_default([$4],
[AC_CONFIG_COMMANDS_PRE([m4_ifset([AH_HEADER], [],
- [AC_DIAGNOSE([obsolete],
- [AC_C_BIGENDIAN should be used with AC_CONFIG_HEADERS])])])dnl
- AC_DEFINE([AC_APPLE_UNIVERSAL_BUILD],1,
- [Define if building universal (internal helper macro)])])
+ [AC_DIAGNOSE([obsolete],
+ [AC_C_BIGENDIAN should be used with AC_CONFIG_HEADERS])])])dnl
+ AC_DEFINE([AC_APPLE_UNIVERSAL_BUILD],1,
+ [Define if building universal (internal helper macro)])])
;; #(
*)
m4_default([$3],
@@ -1950,9 +1949,9 @@ AC_DEFUN([AC_OPENMP],
done])])
case $ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp in #(
"none needed" | unsupported)
- ;; #(
+ ;; #(
*)
- OPENMP_[]_AC_LANG_PREFIX[]FLAGS=$ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp
;;
+ OPENMP_[]_AC_LANG_PREFIX[]FLAGS=$ac_cv_prog_[]_AC_LANG_ABBREV[]_openmp
;;
esac
fi
AC_SUBST([OPENMP_]_AC_LANG_PREFIX[FLAGS])
diff --git a/lib/autoconf/functions.m4 b/lib/autoconf/functions.m4
index f478ccc..0bc9299 100644
--- a/lib/autoconf/functions.m4
+++ b/lib/autoconf/functions.m4
@@ -61,18 +61,34 @@
## 1. Generic tests for functions. ##
## -------------------------------- ##
+# _AC_CHECK_FUNC_BODY
+# -------------------
+# Shell function body for AC_CHECK_FUNC.
+m4_define([_AC_CHECK_FUNC_BODY],
+[ AS_LINENO_PUSH([$[]1])
+ AC_CACHE_CHECK([for $[]2], [$[]3],
+ [AC_LINK_IFELSE([AC_LANG_FUNC_LINK_TRY($[]2)],
+ [AS_VAR_SET([$[]3], [yes])],
+ [AS_VAR_SET([$[]3], [no])])])
+ AS_LINENO_POP
+])# _AC_CHECK_FUNC_BODY
+
# AC_CHECK_FUNC(FUNCTION, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
# -----------------------------------------------------------------
+# Check whether FUNCTION links in the current language. Set the cache
+# variable ac_cv_func_FUNCTION accordingly, then execute
+# ACTION-IF-FOUND or ACTION-IF-NOT-FOUND.
AC_DEFUN([AC_CHECK_FUNC],
-[AS_VAR_PUSHDEF([ac_var], [ac_cv_func_$1])dnl
-AC_CACHE_CHECK([for $1], [ac_var],
-[AC_LINK_IFELSE([AC_LANG_FUNC_LINK_TRY([$1])],
- [AS_VAR_SET([ac_var], [yes])],
- [AS_VAR_SET([ac_var], [no])])])
+[AC_REQUIRE_SHELL_FN([ac_func_]_AC_LANG_ABBREV[_check_func],
+ [AS_FUNCTION_DESCRIBE([ac_func_]_AC_LANG_ABBREV[_check_func],
+ [LINENO FUNC VAR],
+ [Tests whether FUNC exists, setting the cache variable VAR accordingly])],
+ [_$0_BODY])]dnl
+[AS_VAR_PUSHDEF([ac_var], [ac_cv_func_$1])]dnl
+[ac_func_[]_AC_LANG_ABBREV[]_check_func "$LINENO" "$1" "ac_var"
AS_VAR_IF([ac_var], [yes], [$2], [$3])
-AS_VAR_POPDEF([ac_var])dnl
-])# AC_CHECK_FUNC
+AS_VAR_POPDEF([ac_var])])# AC_CHECK_FUNC
# _AH_CHECK_FUNCS(FUNCTION...)
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